Abstract

The Peach Fruit Fly, Bactrocera zonata (Saunders), is considered one of the aggressive fruit flies in Egypt. It is a polyphagous insect,
particularly on peach, mango and guava. B. zonata was recorded as a new pest at north western coast of Egypt in 1998. The aim
of the present work is to evaluate the application of both male annihilation technique (MAT) and bait application technique (BAT) on
suppression of B. zonata through four successive years in Northern coast of Egypt.

The present study was carried out in four areas, two areas (Agamy and Borg El-Arab) in the north-western coast of Alexandria
province, and the other two areas (Mamoura and Abees) in the north-eastern coast of Alexandria. The population density of peach
fruit fly, B. zonata was estimated in the season 2005 before application of National Area-Wide Fruit Flies Extermination Program for
B. zonata in Egypt. The suppression programme of B. zonata depend on BAT and MAT applied in a total area of 13721 and 9779 feddan
for outdoor cultivations and backyards (feddan = 4200 m2), respectively. The programme was applied for four successive years
from 2012 - 2015. Jackson sticky traps baited with methyl eugenol were used to evaluate the reduction of flies.

Results showed that before application of the programme in 2005, mean numbers of captured flies per trap per day (CTD) were
45.24, 4.01, 3.87 and 12.44 at Agamy, borg El-Arab, Mamoura and Abees, respectively. According to the matrix of the different trapping
scenarios of fruit flies designed by IAEA (2003), suppression is considered to be success when the delimiting survey show 0.1
- 1.0 CTD after application. In the current study, CTD was reduced to 0.49, 0.43 and 0.24 for Borg El-Arab, Mamoura and Abis, respectively
after four years of application (from 2012 to 2015). With exception Agamy area, CTD (1.806) is still more than 1.0 because
occurrence of fruit diversity in house backyards. This location still needs more applications of suppression programmes in the future.